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Re: Engine tuning questions - video included....
[Re: lilcuda]
#672793
04/19/10 04:00 PM
04/19/10 04:00 PM
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Joined: Aug 2003
Posts: 4,481
Mesa, AZ
Pat_Whalen
OP
super gas
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OP
super gas
Joined: Aug 2003
Posts: 4,481
Mesa, AZ
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Quote:
Quote:
The cam, chain, and crank were all left alone during my rebuild. Their relationship with one another was not touched, and the engine ran perfectly fine. The only thing that I did move was the distributor drive gear to prime the oil pump. I suppose I could have dropped it back in out of orientation. I just don't understand the sporadically unsteady idle. Could me having the distributor drive gear installed on the wrong tooth cause that?
You said that the engine was rebuilt, but now you're saying that the cam, crank & timing chain were left alone. Did you just do a re-ring? Big difference between a rebuild and a re-ring. What was done to the heads?
Apologies. Bought the engine from a seller who claimed the engine was rebuilt roughly 100 miles prior to me purchasing it. I tore it down to give myself a little piece of mind. Took it down to a short block and was happy with what I saw, so I buttoned the heads back onto it, which brings us to today. So, in essence, it may have been a re-ring or a full rebuild. I'll never know. Pistons aren't stock size, engine is .030 over, and bores look freshly honed.
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Re: Engine tuning questions - video included....
[Re: Pat_Whalen]
#672794
04/19/10 07:28 PM
04/19/10 07:28 PM
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Joined: Aug 2003
Posts: 4,481
Mesa, AZ
Pat_Whalen
OP
super gas
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OP
super gas
Joined: Aug 2003
Posts: 4,481
Mesa, AZ
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The frustration continues:
Reinstalled spark plugs, rewired plug wires, restarted engine. Still running the same.
Now there is a sound that sounds like squeeking, and yes, it's coming from inside the carb air hat. WTH.
Also, while it was running the same as always, noticed number 5's plug wire was off the plug and just sitting there. A blessing, I figured. When I plugged it back in, making sure it had positive contact, there was absolutely NO change in how the engine ran.
I'm beginning to get a little frustrated, which isn't how I wanted this to go.
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Re: Engine tuning questions - video included....
[Re: Pat_Whalen]
#672795
04/19/10 09:40 PM
04/19/10 09:40 PM
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Joined: Feb 2005
Posts: 5,221
Branson, Mo.
joedust451
super gas
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super gas
Joined: Feb 2005
Posts: 5,221
Branson, Mo.
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Quote:
The frustration continues:
Reinstalled spark plugs, rewired plug wires, restarted engine. Still running the same.
Now there is a sound that sounds like squeeking, and yes, it's coming from inside the carb air hat. WTH.
Also, while it was running the same as always, noticed number 5's plug wire was off the plug and just sitting there. A blessing, I figured. When I plugged it back in, making sure it had positive contact, there was absolutely NO change in how the engine ran.
I'm beginning to get a little frustrated, which isn't how I wanted this to go.
Make sure the fireing order is currect.
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Re: Engine tuning questions - video included....
[Re: joedust451]
#672796
04/19/10 09:47 PM
04/19/10 09:47 PM
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Joined: Aug 2003
Posts: 4,481
Mesa, AZ
Pat_Whalen
OP
super gas
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OP
super gas
Joined: Aug 2003
Posts: 4,481
Mesa, AZ
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Quote:
Quote:
The frustration continues:
Reinstalled spark plugs, rewired plug wires, restarted engine. Still running the same.
Now there is a sound that sounds like squeeking, and yes, it's coming from inside the carb air hat. WTH.
Also, while it was running the same as always, noticed number 5's plug wire was off the plug and just sitting there. A blessing, I figured. When I plugged it back in, making sure it had positive contact, there was absolutely NO change in how the engine ran.
I'm beginning to get a little frustrated, which isn't how I wanted this to go.
Make sure the fireing order is currect.
Wish it were that easy. Double and triple checked...
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Re: Engine tuning questions - video included....
[Re: Pat_Whalen]
#672797
04/20/10 12:53 PM
04/20/10 12:53 PM
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Joined: May 2005
Posts: 598
NC, USA
davenc
mopar
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mopar
Joined: May 2005
Posts: 598
NC, USA
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Pat,
Concentrate on the known issue. Something is not right on cyliner#1.
Are you certain the plug was correctly gapped when it was installed? If so, then either the piston, or something which fell into the intake valve made contact with it, both which are bad news.
You may want to regap the plug, pull all 7 other plugs out, put regapped plug back into number 1, and turn the motor over by hand for two entire revolutions. Then pull the plug back out and check the gap.
I am doubtful the piston could be hitting it, but best to rule it out.
Regards,
Dave
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Re: Engine tuning questions - video included....
[Re: Dusted_Ya]
#672800
04/20/10 04:30 PM
04/20/10 04:30 PM
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Joined: Jan 2003
Posts: 5,791
Hamilton, Ontario Canada
Magnum
master
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master
Joined: Jan 2003
Posts: 5,791
Hamilton, Ontario Canada
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No change in the run quality with a Holley usually means a blown power valve feeding raw fuel to the engine. I did see you have an Edelbrock but I just thought I'd throw that out there.
Does that #5 which does not contribute to the engine running. Is it feed from the same side of the carb that is unresponsive, follow the dual plane runner.
69 Super Bee, 93 Mustang LX, 04 Allure Super
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Re: Engine tuning questions - video included....
[Re: ireland383]
#672802
04/20/10 06:05 PM
04/20/10 06:05 PM
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Joined: Aug 2003
Posts: 4,481
Mesa, AZ
Pat_Whalen
OP
super gas
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OP
super gas
Joined: Aug 2003
Posts: 4,481
Mesa, AZ
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Update: Decided to window my current distributor cap to make absolutely positive something funny wasn't going on with the timing. Balancer line lined up with 0* mark on timing tab, on compression stroke of cylinder #1, here's what I see:  You may or may not notice the small white deposits on the inner terminals for the cap. I got to looking at them and decided I didn't like what I saw. Every time I've replaced a cap, the internal contacts were shinny and smooth. These were not shiny, and very porous. After I did an ohm test on all 8 spark plug's wires (all came back between .78k and 1.52k - standard for Taylor 8mm Spiro pro wires), I decided to test conductivity between the inner contacts and outter contacts on my original cap. Disgusting. Some had marginal resistance, about 4 of them I had to grind my meter probe into the inner contact just to see any conductivity there. Ran to the parts store around the corner, bought new cap and rotor, measured those. Just barely touching them, they're all right around .01 ohm. Replaced, re-timed, and here is the result: http://www.youtube.com/watch?v=cLudJkx07FEWas able to adjust the IMS screws and notice an idle difference. Finished that up. My only concern now is the squeeking noise that is very apparent when the camera is around the carb. It gets faster as I rev the engine, and then becomes slow when I'm away from it. Frighteningly enough, it sounds like it's coming from inside the carb. Looked around everywhere to see if I could find what might be causing that noise. Nothing. Guess I'll have to check harder. Hopefully it's nothing internally.
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Re: Engine tuning questions - video included....
[Re: Pat_Whalen]
#672803
04/20/10 06:12 PM
04/20/10 06:12 PM
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Joined: May 2003
Posts: 15,487
Florida
scratchnfotraction
I Live Here
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I Live Here
Joined: May 2003
Posts: 15,487
Florida
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Pat,gotta love those spacers on the alt pivot bolt  are the rocker oiling good? not going dry are they? can you hear it in the vid?
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Re: Engine tuning questions - video included....
[Re: scratchnfotraction]
#672804
04/20/10 06:19 PM
04/20/10 06:19 PM
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Joined: Aug 2003
Posts: 4,481
Mesa, AZ
Pat_Whalen
OP
super gas
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OP
super gas
Joined: Aug 2003
Posts: 4,481
Mesa, AZ
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Quote:
Pat,gotta love those spacers on the alt pivot bolt
Shhh! I'm waiting for my spacers from Bouchillon.
Quote:
are the rocker oiling good?
not going dry are they?
can you hear it in the vid?
No idea. Haven't pulled the covers to find out. I now I've got about 50psi of oil pressure when warm. Yes, you can hear the squeek in the video as I rev it. It's very high pitched, and it may even sound like something coming from your computer, but I assure you, it's definitely coming from my engine.
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Re: Engine tuning questions - video included....
[Re: scratchnfotraction]
#672805
04/20/10 06:21 PM
04/20/10 06:21 PM
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Joined: May 2003
Posts: 15,487
Florida
scratchnfotraction
I Live Here
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I Live Here
Joined: May 2003
Posts: 15,487
Florida
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yea i hear the sqeeking may check the wp and the dist shaft maybe yank the belts of to rule that stuff out,shouldnt hurt to run it enuff to see if thats it dont know what would be in the carb to do that.sure its not a whistel or vac leak  are you running points? sure fires up fast  might do new plugs as those could be fuel fould from not fireing for a bit with the gap closed what heads and do you have the right plugs? mine are the 5/8 peanut plugs on the 452 heads 
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Re: Engine tuning questions - video included....
[Re: scratchnfotraction]
#672806
04/20/10 06:24 PM
04/20/10 06:24 PM
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Joined: May 2003
Posts: 15,487
Florida
scratchnfotraction
I Live Here
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I Live Here
Joined: May 2003
Posts: 15,487
Florida
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just rubbing you on the spacers...we wont talk about some of mine  every thing was looking good good vac reading and steady I have not seen a dwel meter like that in a while,I will have to dig out my engine anylizer and clean off the dust since I am running points in my 440 
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Re: Engine tuning questions - video included....
[Re: scratchnfotraction]
#672807
04/20/10 06:25 PM
04/20/10 06:25 PM
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Joined: Aug 2003
Posts: 4,481
Mesa, AZ
Pat_Whalen
OP
super gas
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OP
super gas
Joined: Aug 2003
Posts: 4,481
Mesa, AZ
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Quote:
yea i hear the sqeeking
may check the wp and the dist shaft
maybe yank the belts of to rule that stuff out,shouldnt hurt to run it enuff to see if thats it
Was my next course of action to remove the belt. Only thing getting powered right now is the alt, so it won't hurt it none. Just doesn't sound like it's coming from that area, although at this point, I'd love for it to be the waterpump.
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dont know what would be in the carb to do that.sure its not a whistel or vac leak
No whistle. Definitely high pitched metal on metal rubbing.
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are you running points?
Negative
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sure fires up fast
New mini-starter, low compression, and a fully charged battery
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might do new plugs as those could be fuel fould from not fireing for a bit with the gap closed
Couldn't hurt. I'll pick some up next time I'm at the parts store.
Quote:
what heads and do you have the right plugs?
mine are the 5/8 peanut plugs on the 452 heads
Mine are the motorhome 452's that take the autolight 23's, the tapered seat instead of the crush washer.
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Re: Engine tuning questions - video included....
[Re: scratchnfotraction]
#672808
04/20/10 06:26 PM
04/20/10 06:26 PM
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Joined: Aug 2003
Posts: 4,481
Mesa, AZ
Pat_Whalen
OP
super gas
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OP
super gas
Joined: Aug 2003
Posts: 4,481
Mesa, AZ
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Quote:
just rubbing you on the spacers...we wont talk about some of mine
every thing was looking good
good vac reading and steady
I have not seen a dwel meter like that in a while,I will have to dig out my engine anylizer and clean off the dust since I am running points in my 440
I had heard they're integral to fine tuning, so I set out to look for one. Believe it or not, Sears had three of them. They were locked onto the rod they were hanging from at the store and I asked an old timer if I could get one. He commented on the fact that those same three had been there since the store opened 
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Re: Engine tuning questions - video included....
[Re: scratchnfotraction]
#672809
04/20/10 06:29 PM
04/20/10 06:29 PM
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Joined: May 2003
Posts: 15,487
Florida
scratchnfotraction
I Live Here
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I Live Here
Joined: May 2003
Posts: 15,487
Florida
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maybe some one can chime in isnt the dwell supposed to be around 30*???? been awhile since I used one but seems thats what I used to set mine at but that was with points yep autolight 23 in mine also I know when I first fired mine off it ran bad till I got new plugs it had burnt 2 wires off when in the MH and had been running that way for a while from the looks of them smoothed right out with new ones how old are those? same ones before the rebuild? 
Last edited by scratchnfotraction; 04/20/10 06:33 PM.
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Re: Engine tuning questions - video included....
[Re: scratchnfotraction]
#672810
04/20/10 06:33 PM
04/20/10 06:33 PM
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Joined: Aug 2003
Posts: 4,481
Mesa, AZ
Pat_Whalen
OP
super gas
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OP
super gas
Joined: Aug 2003
Posts: 4,481
Mesa, AZ
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Quote:
maybe some one can chime in
isnt the dwell supposed to be around 30*????
been awhile since I used one but seems thats what I used to set mine at
No idea. Wasn't checking dwell, was checking RPM. There is a switch on the left side there to change it to a dwell meter
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